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New Study Finds No Link Between Saturated Fat and Heart Disease

Posted by SoundHealth on Monday, March 08, 2010
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A recent analysis of 21 saturated fat/heart health studies has shown no link between saturated fat intake and heart disease, adding to the growing body of research showing that saturated fats do not cause cardiovascular disease. There is a slow, but steady admission of the fact that cholesterol is not the primary causative factor of heart disease, that inflammation underlies the development of this disease and that the saturated fat connection to heart disease is dubious at best, and that it is refined carbohydrates that are mostly responsible for bringing about the underlying biochemical conditions in the body out of which systemic diseases such as diabetes and heart disease develop.

Study Details

For the current study, researchers examined data from 21 studies that included a total of nearly 348,000 adults.

Participants, who were generally healthy to start, were surveyed about their diet habits and then followed for anywhere from 5 to 23 years. Over that time, 11,000 developed heart disease or suffered a stroke.

Overall, the researchers found there was no difference in the risks of heart disease and stroke between people with the lowest and highest intakes of saturated fat.

The studies that have linked the "Western diet" to an increased heart disease risk most likely simply confirm that sugar and refined carbohydrates are harmful to heart health. Because although the Western diet is high in red and processed meats and saturated fats, it's also alarmingly high in sugar and refined carbohydrates like bread and pasta.

The authors stated that dietary efforts to improve cardivascular disease risk should primarily emphasize:

Research Paper Details

Siri-Tarino PW, sun Q, Hu FB, Krauss RM. Meta-analysis of prospective cohort studies evaluating the association of saturated fat with cardiovascular disease. Am J Clin Nutr. 2010 Mar;91(3):535-46.


Background: A reduction in dietary saturated fat has generally been thought to improve cardiovascular health.

Objective: The objective of this meta-analysis was to summarize the evidence related to the association of dietary saturated fat with risk of coronary heart disease (CHD), stroke, and cardiovascular disease (CVD; CHD inclusive of stroke) in prospective epidemiologic studies.

Design: Twenty-one studies identified by searching MEDLINE and EMBASE databases and secondary referencing qualified for inclusion in this study. A random-effects model was used to derive composite relative risk estimates for CHD, stroke, and CVD.

Results: During 5-23 y of follow-up of 347,747 subjects, 11,006 developed CHD or stroke. Intake of saturated fat was not associated with an increased risk of CHD, stroke, or CVD. The pooled relative risk estimates that compared extreme quantiles of saturated fat intake were 1.07 (95% CI: 0.96, 1.19; P = 0.22) for CHD, 0.81 (95% CI: 0.62, 1.05; P = 0.11) for stroke, and 1.00 (95% CI: 0.89, 1.11; P = 0.95) for CVD. Consideration of age, sex, and study quality did not change the results.

Conclusions: A meta-analysis of prospective epidemiologic studies showed that there is no significant evidence for concluding that dietary saturated fat is associated with an increased risk of CHD or CVD. More data are needed to elucidate whether CVD risks are likely to be influenced by the specific nutrients used to replace saturated fat.

Why you need saturated fats

Saturated fats are vital for a healthy diet. They provide a concentrated source of energy and provide the building blocks for cell membranes and a variety of hormones and hormone-like substances. They also act as carriers for the important fat-soluble vitamins A, D, E and K.

Dietary fats are also needed for the conversion of carotene to Vitamin A, for mineral absorption, and for a host of other biological processes.

Therefore, some saturated fat is needed in the diet for a healthy body. However, as explained previously, it's the unhealthy trans fats that are found in margarine, hydrogenated vegetable oils and processed foods that cause significant health problems.

Here are some tips to help ensure you're eating the right fats:

  • Use butter instead of margarines and vegetable oil spreads. Butter is a healthy, natural food that contains many beneficial substances, unlike artificial and chemically-refined spreads.

  • Use coconut oil for cooking. It has a higher boiling point and is far superior to any other cooking oil, and it is loaded with health benefits.

  • Eat foods like avocados, raw dairy products and olive oil.

You may also find the other articles on this site regarding cholesterol to be of interest. See the related articles section further below.

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